Development of a resonance igniter for GO2/kerosene ignition

Niwa, Masakazu; Santana, A.; Valle, M.; Kessaev, K.

doi:10.2514/6.2000-3302

Cited by 9 publications

(5 citation statements)

References 4 publications

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“…The ignition system also has an important role for combustion at the very ¦rst moments of this procedure, with use of resonance igniter [15] operating with GOx and the same fuel as GG Figure 2 Igniter during nominal operation to verify hot gas interaction with metallic chamber material and mixture ratio adjusted to 15, which operates as a oxidizer supply, keeping combustion zone mixture ratio high during ignition procedure inorder to facilitate the start of combustion. Several tests of igniter were carried out to verify any possible interaction of oxidizer rich gas with metallic wall of GG combustion chamber.…”

Section: First Resultsmentioning

confidence: 99%

LOx/ethanol gas generator: investigation and development

Hahn¹,

Nascimento²,

Almeida³

2019

Progress in Propulsion Physics – Volume 11

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This paper presents preliminary experimental results of a gas generator (GG) developed for research to determine the burning characteristics in mixture ratios below the stoichiometric and the validation of the chemical equilibrium software, as well as performance calculations, with own developed software used specifically in the design of this model of GG. For this work, tests were carried out at pressures below nominal operation point for an initial investigation of combustion behavior in low mixture ratio. The results show the possibility to a new analysis method which leads to development of numerical tools to investigate its behavior.

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Section: First Resultsmentioning

confidence: 99%

LOx/ethanol gas generator: investigation and development

Hahn¹,

Nascimento²,

Almeida³

2019

Progress in Propulsion Physics – Volume 11

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“…This generated hot gas has the potential ability to ignite a combusting mixture. Starting combustion process as an "acoustic igniter" without using any moving part or electrical spark in space propulsion engines is one of the notable thermal applications of the device [4][5][6][7][8][9]. The Hartmann whistle also has other applications in active flow control devices [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Effect of pipe geometry and material properties on flow characteristics and thermal performance of a conical Hartmann–Sprenger tube

Khoshkbijari

Karimi

2017

J Braz. Soc. Mech. Sci. Eng.

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“…References [22] and [23] developed new resonance ignition systems based on the HRT and used it for multiple ignitions without additional mechanical complexities. Ma [24] successfully implemented stable and high efficiency oil combustion in an industrial furnace with an ultrasonic atomizer based on a HRT.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Acoustic Field Induced by HRT on Oscillation Behavior of a Single Droplet

et al. 2017

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This paper presents an experimental and theoretical study on the effects of an acoustic field induced by Hartmann Resonance Tube (HRT) on droplet deformation behavior. The characteristics of the acoustic field generated by HRT are investigated. Results show that the acoustic frequency decreases with the increase of the resonator length, the sound pressure level (SPL) increases with the increase of nozzle pressure ratio (NPR), and it is also noted that increasing resonator length can cause SPL to decrease, which has rarely been reported in published literature. Further theoretical analysis reveals that the resonance frequency of a droplet has several modes, and when the acoustic frequency equals the droplet's frequency, heightened droplet responses are observed with the maximum amplitude of the shape oscillation. The experimental results for different resonator cavity lengths, nozzle pressure ratios and droplet diameters confirm the non-linear nature of this problem, and this conclusion is in good agreement with theoretical analysis. Measurements by high speed camera have shown that the introduction of an acoustic field can greatly enhance droplet oscillation, which means with the use of an ultrasonic atomizer based on HRT, the quality of atomization and combustion can be highly improved.

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Development of a resonance igniter for GO2/kerosene ignition

Cited by 9 publications

References 4 publications

LOx/ethanol gas generator: investigation and development

LOx/ethanol gas generator: investigation and development

Effect of pipe geometry and material properties on flow characteristics and thermal performance of a conical Hartmann–Sprenger tube

The Influence of Acoustic Field Induced by HRT on Oscillation Behavior of a Single Droplet

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